<!--  -->
<template>
<div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
        <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
        <el-breadcrumb-item>用户管理</el-breadcrumb-item>
        <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>    

    <!-- 卡片区域 -->
    <el-card>
        <!-- 搜索与添加区域 -->
        <el-row :gutter="20">
            <el-col :span="9">
                <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
                    <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
                </el-input>
            </el-col>
            <el-col :span="4">
                <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
            </el-col>
        </el-row>

        <!-- 用户列表区域 -->
        <el-table :data="userlist" border stripe>
            <el-table-column type="index"></el-table-column>
            <el-table-column
                prop="username"
                label="姓名">
            </el-table-column>
            <el-table-column
                prop="email"
                label="邮箱">
            </el-table-column>
            <el-table-column
                prop="mobile"
                label="电话">
            </el-table-column>
            <el-table-column
                prop="role_name"
                label="角色">
            </el-table-column>
            <el-table-column label="状态">
                <template slot-scope="scope">
                    <el-switch v-model="scope.row.mg_state" @change="userStateChange(scope.row)">
                    </el-switch>
                </template>
            </el-table-column>
            <el-table-column label="操作" width="180px">
                <template slot-scope="scope">
                    <el-button type="primary" 
                    icon="el-icon-edit" 
                    size="mini"
                    @click="showEditDialog(scope.row.id)">
                    </el-button>
                    <el-button 
                    type="danger" icon="el-icon-delete" size="mini"
                    @click="removeUserById(scope.row.id)">
                    </el-button>
                    <el-tooltip effect="dark" content="角色分配" placement="top" :enterable="false">
                        <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
                    </el-tooltip>
                </template>
            </el-table-column>
        </el-table> 

        <!-- 分页区域 -->
        <el-pagination
            @size-change="handleSizeChange"
            @current-change="handleCurrentChange"
            :current-page="queryInfo.pagenum"
            :page-sizes="[1, 2, 5, 10]"
            :page-size="queryInfo.pagesize"
            layout="total, sizes, prev, pager, next, jumper"
            :total="total">
        </el-pagination>
    </el-card>

    <!-- 添加用户对话框 -->
    <el-dialog
        title="添加用户"
        :visible.sync="addDialogVisible"
        width="50%"
        @close='addDialogClose'>
        <!-- 内容主体区 -->
        <el-form :model="addForm" 
        :rules="addFormRules"
        ref="addFormRef" label-width="70px"
        >
            <el-form-item label="用户名" prop="username">
                <el-input v-model="addForm.username"></el-input>
            </el-form-item>
            <el-form-item label="密码" prop="password">
                <el-input v-model="addForm.password"></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
                <el-input v-model="addForm.email"></el-input>
            </el-form-item>
            <el-form-item label="电话" prop="mobile">
                <el-input v-model="addForm.mobile"></el-input>
            </el-form-item>
        </el-form>
        <!-- 底部按钮区 -->
        <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="adduser">确 定</el-button>
        </span>
    </el-dialog>

    <!-- 修改用户对话框 -->
    <el-dialog title="修改用户"
        :visible.sync="editDialogVisible"
        width="50%"
        @close='editDialogClosed'>
        <!-- 内容主体区 -->
        <el-form :model="editForm" 
        :rules="editFormRules"
        ref="editFormRef" label-width="70px"
        >
            <el-form-item label="用户名">
                <el-input v-model="editForm.username" disabled></el-input>
            </el-form-item>
            <el-form-item label="邮箱" prop="email">
                <el-input v-model="editForm.email"></el-input>
            </el-form-item>
            <el-form-item label="电话" prop="mobile">
                <el-input v-model="editForm.mobile"></el-input>
            </el-form-item>
        </el-form>
        <!-- 底部按钮区 -->
        <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="edituser">确 定</el-button>
        </span>
    </el-dialog>

    <!-- 角色分配对话框 -->
    <el-dialog
        title="分配角色"
        :visible.sync="SetRoleDialogVisible"
        width="50%"
        @close='SetRoleDialogClosed'>
        <!-- 内容主体区 树形控件-->
        <div>
            <p>当前的用户：{{userinfo.username}}</p>
            <p>当前的角色：{{userinfo.role_name}}</p>
            <p>分配新角色：
                <el-select v-model="selectRoleId" placeholder="请选择">
                    <el-option
                    v-for="item in rolesList"
                    :key="item.id"
                    :label="item.roleName"
                    :value="item.id">
                    </el-option>
                </el-select>
            </p>
        </div>
        
         <!-- 底部按钮区 -->
        <span slot="footer" class="dialog-footer">
            <el-button @click="SetRoleDialogVisible = false">取 消</el-button>
            <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
        </span>
    </el-dialog>



</div>
</template>

<script>
export default {
    data() {
        var checkEmail = (rule,value,cb)=>{
            const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/

            if(regEmail.test(value)){
                return cb()
            }
            cb(new Error('请输入合法的邮箱'))
        }

        var checkMobile = (rule,value,cb)=>{
            const regMobile = /^((13[0-9])|(17[0-1,6-8])|(15[^4,\\D])|(18[0-9]))\d{8}$/

            if(regMobile.test(value)){
                return cb()
            }
            cb(new Error('请输入合法的电话'))
        }

        return {
            queryInfo:{
                query:'',
                // 当前的页数
                pagenum:1,
                // 当前的页面显示多少条数据
                pagesize:2
            },
            userlist:[],
            total:0,
            //控制添加用户对话框的显示与隐藏
            addDialogVisible:false,
            // 被添加用户的表单数据
            addForm:{ 
                username:'',
                password:'',
                email:'',
                mobile:''
            },
            addFormRules:{
                username:[
                    { required: true, message: '请输入用户名', trigger: 'blur' },
                    { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
                ],
                password:[
                    { required: true, message: '请输入密码', trigger: 'blur' },
                    { min: 5, max: 10, message: '长度在 5 到 10 个字符', trigger: 'blur' }
                ],
                email:[
                    { required: true, message: '请输入email', trigger: 'blur' },
                    { validator:checkEmail,trigger: 'blur'}
                ],
                mobile:[
                    { required: true, message: '请输入电话', trigger: 'blur' },
                    { validator:checkMobile,trigger: 'blur'}
                ]
            },
            //控制修改用户对话框的显示和隐藏
            editDialogVisible: false,
            // 查询到的用户信息对象
            editForm:{},
            editFormRules:{
                email:[
                    { required: true, message: '请输入email', trigger: 'blur' },
                    { validator:checkEmail,trigger: 'blur'}
                ],
                mobile:[
                    { required: true, message: '请输入电话', trigger: 'blur' },
                    { validator:checkMobile,trigger: 'blur'}
                ]
            },

            // 控制分配角色对话框的显示与隐藏
            SetRoleDialogVisible:false,
            // 需要被分配角色的用户信息
            userinfo:{},
            // 所有角色的数据列表
            rolesList:[],
            // 已选中的角色的ID值
            selectRoleId:''

        }
    },
    created(){
        this.getUserList()
    },
    methods:{
        async getUserList(){
            const {data:res} = await this.$http.get('users',{params:this.queryInfo}) // eslint-disable-line no-unused-vars
            // console.log(res);
            if(res.meta.status !=200)
                return this.$message.error("获取用户列表失败");
            this.$message.success('获取用户列表成功')
            this.userlist = res.data.users
            this.total = res.data.total
        },
        handleSizeChange(newSize){
            // console.log(newSize);
            this.queryInfo.pagesize = newSize;
            this.getUserList();
        },
        handleCurrentChange(newPage){
            // console.log(newPage)
            this.queryInfo.pagenum = newPage;
            this.getUserList();
        },
        // 监听switch状态的改变
        async userStateChange(userinfo){
            const { data: res} = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)// eslint-disable-line no-unused-vars
            // console.log(res);
            if(res.meta.status != 200){
                userinfo.mg_state = !userinfo.mg_state
                return this.$message.error('更新用户状态失败');
            
            }
            this.$message.success('更新用户状态成功')
        },
        // 表单在关闭时应该重置
        addDialogClose(){
            this.$refs.addFormRef.resetFields()
        },
        // 表单在按下确定时完成预校验,添加用户
        adduser(){
            this.$refs.addFormRef.validate(async valid =>{
                if(!valid) return
                const {data:res} = await this.$http.post('users',this.addForm) // eslint-disable-line no-unused-vars
                if(res.meta.status != 201){
                    this.$message.error('添加用户失败')
                }
                this.$message.success('添加用户成功')
                this.addDialogVisible = false
                this.getUserList()
            })
        },
        // 控制修改用户对话框的显示
        async showEditDialog(id){
            // console.log(id)
            const { data: res} = await this.$http.get(`users/${id}`) // eslint-disable-line no-unused-vars
            // console.log(res)
            if(res.meta.status != 200)
                return this.$message.error('获取数据失败')
            this.editForm = res.data

            this.editDialogVisible = true
        },
        editDialogClosed(){
            this.$refs.editFormRef.resetFields()
        },
        // 修改用户更新用户信息
        edituser(){
            this.$refs.editFormRef.validate(async valid => {
                if(!valid) return
                const { data: res} = await this.$http.put(`users/${this.editForm.id}`,{email:this.editForm.email,mobile:this.editForm.mobile}) // eslint-disable-line no-unused-vars
                // console.log(res)
                if(res.meta.status != 200){
                    this.$message.error('更新用户失败')
                }
                this.editDialogVisible = false
                this.getUserList()
                this.$message.success('更新用户成功')
            })
        },
        // 删除用户
        async removeUserById(id){
            // 用confirmResult接受$confirm函数输出的结果
            const confirmResult = await this.$confirm(
                '此操作将永久删除该用户, 是否继续?', 
                '提示',
                {
                    confirmButtonText: '确定',
                    cancelButtonText: '取消',
                    type: 'warning'
            }).catch(e => e)
                // 当用户按下确定时，该函数不报错，且返回一个字符串 confirm
                // 当用户按下取消时，该函数会报错，但用catch捕捉，所以返回cancel
            if(confirmResult != 'confirm'){
                    return this.$message.info('已取消删除')
            }

            const {data:res} =await this.$http.delete(`users/${id}`)  // eslint-disable-line no-unused-vars
            if(res.meta.status != 200){
                    return this.$message.error('删除用户失败')
            }
            this.$message.success("删除用户成功")
            this.getUserList();
        },
        // 展示分配角色的对话框
        async setRole(user){
            const {data:res} = await this.$http.get('roles')
            if(res.meta.status !== 200){
                 return this.$message.error('获取角色列表失败')
            }
                 
            this.rolesList = res.data
            //获取到被点击的用户的信息，作用于插槽，保存到userinfo中
            this.userinfo = user
            this.SetRoleDialogVisible = true
        },
        // 点击按钮，分派角色
        async saveRoleInfo(){
            if(!this.selectRoleId){
                return this.$message.error('请选择新分配的角色')
            }
            const {data:res} = this.$http.put(`users/${this.userinfo.id}/role`,{
                rid: this.selectRoleId
            })
            if(res.meta.status !== 200){
                 return this.$message.error('更新角色失败')
            }
            this.$message.success('更新角色成功')
            this.getUserList()
            this.SetRoleDialogVisible = false
        },
        //监听分配角色对话框的关闭，关闭对话框时，重置
        SetRoleDialogClosed(){
            this.selectRoleId = ''
            this.userinfo = {}
        }



    }

}
</script>

<style lang='less' scoped>

</style>